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# Operations & Algebraic Thinking

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• Place colored tiles on top of the same black and white coral reef animal. Place the answer tiles in the blank. Three pages.
• Use these colored tiles with the "add/subtract to 10" lessons on abcteach.com. Also fun for matching games and other activities.
• [member-created document] Trace and cut out. This 21-page, chick-shaped shapebook presents simple addition and subtraction problems.
• [created with abctools] Count the number of shapes in each group, take the second group away from the first, and count how many shapes remain. Black and white graphics.
• Place colored tiles on top of the same black and white coral reef animal. Place the answer tiles in the blank. Three pages.
• Cute Powerpoint teaching sets of numbers for simple addition.  Common Core: Math: K.OA.3 (Review for Grade 1)

• [created with abctools] Count the number of shapes in each group, take the second group away from the first, and count how many shapes remain. Black and white graphics.
• [created with abctools] Count the number of shapes in each group, take the second group away from the first, and count how many shapes remain. Black and white graphics.
•  Cute graphics for teaching the concept of adding numbers to ten.  Common Core: K.Oa.4 (Review for Grade 1)

• [created with abctools] Count the number of shapes in each group, take the second group away from the first, and count how many shapes remain. Black and white graphics.
• "Count the flowers. How many are there?" with dot-hinted answers.
• Cute Powerpoint with addition and subtraction word problems. Happy Birthday theme and animations. Common Core Math: K.OA.2 (Review for Grade 1)

• Simple math concepts, with pictures
• Place colored tiles on top of the same black and white coral reef animal. Place the answer tiles in the blank. Three pages.
• Simple math concepts, with pictures
• Interactive flipchart activity for Prek-1st. Counting and addition skills. Thanksgiving theme with pumpkin pie graphics. Common Core Math: K.CC.B.5

• [member-created with abctools] Count the number of shapes in each group, take the second group away from the first, and write how many shapes remain.
• Match the math problems (with sums to 15) to the answers to win the game.
• Students fill in missing differences for illustrated basic subtraction facts number sentences.
• Cute and colorful PowerPoint presentation to help teach the concept of addition and subtraction.  Quiz format with pictures and numbers.  Common Core: K.OA.1

• [created with abctools] Count the number of shapes in each group, take the second group away from the first, and count how many shapes remain. Black and white graphics.
• Students fill in missing differences for illustrated basic subtraction facts number sentences.
• Students fill in missing differences for illustrated basic subtraction facts number sentences.
• Students fill in missing differences for illustrated basic subtraction facts number sentences.
• Count the number of shapes in each group and write the total. With grayscale graphics.
• Match the math problems (with sums to 15) to the answers to win the game.
• Simple math concepts, with pictures
• Simple math concepts, with pictures
• Simple math concepts, with pictures
• Frog and duck addition, sums to five.